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Switch from std::set to std::map in parse_util.cpp

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This commit is contained in:
ridiculousfish 2012-01-04 17:56:02 -08:00
parent fec0415d4e
commit 6f45832aed
1 changed files with 37 additions and 45 deletions
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82
parse_util.cpp
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@ -55,18 +55,11 @@
struct autoload_function_t
{
bool is_placeholder; //whether we are a placeholder that stands in for "no such function"
wcstring name; //function name
time_t modification_time; // st_mtime
time_t load_time; // when function was loaded
struct compare_names
{
bool operator()(const autoload_function_t &a, const autoload_function_t &b) const {
return a.name < b.name;
}
};
autoload_function_t(const wcstring &the_name) : is_placeholder(false), name(the_name), modification_time(0), load_time(0) { }
autoload_function_t() : is_placeholder(false), modification_time(0), load_time(0) { }
};
/**
@ -75,8 +68,8 @@ struct autoload_function_t
struct autoload_t
{
private:
typedef std::set<autoload_function_t, autoload_function_t::compare_names> autoload_function_set_t;
autoload_function_set_t functions_set;
typedef std::map<wcstring, autoload_function_t> autoload_functions_map_t;
autoload_functions_map_t autoload_functions;
public:
/**
@ -85,72 +78,73 @@ public:
*/
std::set<wcstring> is_loading_set;
bool is_loading(const wcstring &name) {
bool is_loading(const wcstring &name) const {
return is_loading_set.find(name) != is_loading_set.end();
}
autoload_function_t *create_function_with_name(const wcstring &name)
{
const autoload_function_t func(name);
autoload_function_set_t::iterator iter = functions_set.insert(func).first;
return const_cast<autoload_function_t *>(&*iter);
return &autoload_functions[name];
}
bool remove_function_with_name(const wcstring &name)
{
const autoload_function_t func(name);
size_t numErased = functions_set.erase(func);
return numErased > 0;
return autoload_functions.erase(name) > 0;
}
autoload_function_t *get_function_with_name(const wcstring &name)
{
autoload_function_t *result = NULL;
const autoload_function_t func(name);
autoload_function_set_t::iterator iter = functions_set.find(func);
if (iter != functions_set.end())
result = const_cast<autoload_function_t *>(&*iter);
autoload_functions_map_t::iterator iter = autoload_functions.find(name);
if (iter != autoload_functions.end())
result = &iter->second;
return result;
}
void remove_all_functions(void)
{
functions_set.clear();
autoload_functions.clear();
}
size_t function_count(void) const
{
return functions_set.size();
return autoload_functions.size();
}
/* Get the function least recently loaded, or NULL */
autoload_function_t *get_lru_function(const wcstring &skip)
/* Get the name of the function that was least recently loaded, if it was loaded before cutoff_access. Return NULL if no function qualifies. */
const wcstring *get_lru_function_name(const wcstring &skip, time_t cutoff_access) const
{
autoload_function_t *result = NULL;
autoload_function_set_t::iterator iter;
for (iter = functions_set.begin(); iter != functions_set.end(); iter++)
const wcstring *resultName = NULL;
const autoload_function_t *resultFunction = NULL;
autoload_functions_map_t::const_iterator iter;
for (iter = autoload_functions.begin(); iter != autoload_functions.end(); iter++)
{
/* Skip the skip */
if (iter->name == skip) continue;
/* Skip items that aren't real */
if (iter->is_placeholder) continue;
if (iter->first == skip) continue;
/* Skip items that are still loading */
if (is_loading(iter->name)) continue;
if (is_loading(iter->first)) continue;
/* C++ makes all std::set iterators const because it wants to annoy us. */
if (result == NULL || iter->load_time < result->load_time)
result = const_cast<autoload_function_t *>(&*iter);
/* Skip placeholder items */
if (iter->second.is_placeholder) continue;
/* Check cutoff_access */
if (iter->second.load_time > cutoff_access) continue;
/* Remember this if it was used earlier */
if (resultFunction == NULL || iter->second.load_time < resultFunction->load_time) {
resultName = &iter->first;
resultFunction = &iter->second;
}
return result;
}
return resultName;
}
void apply_handler_to_nonplaceholder_function_names(void (*handler)(const wchar_t *cmd)) const
{
autoload_function_set_t::iterator iter;
for (iter = functions_set.begin(); iter != functions_set.end(); iter++)
handler(iter->name.c_str());
autoload_functions_map_t::const_iterator iter;
for (iter = autoload_functions.begin(); iter != autoload_functions.end(); iter++)
handler(iter->first.c_str());
}
/**
@ -785,12 +779,10 @@ static void parse_util_autounload( const wchar_t *path_var_name,
if( loaded.function_count() >= AUTOLOAD_MAX )
{
autoload_function_t *lru = loaded.get_lru_function(skip);
time_t cutoff_access = time(0) - AUTOLOAD_MIN_AGE;
if (lru && lru->load_time < cutoff_access)
{
parse_util_unload( lru->name.c_str(), path_var_name, on_load );
}
const wcstring *lru = loaded.get_lru_function_name(skip, cutoff_access);
if (lru)
parse_util_unload( lru->c_str(), path_var_name, on_load );
}
}